Characterization of the migration process of dunes at Flexeiras, Baleia, Paracuru and Jericoacoara, Northwest Ceará State, Brazil

Authors

  • Alexandre Medeiros de Carvalho Departamento de Geologia da Universidade Federal do Ceará, Campus do Pici, Fortaleza.
  • Luís Parente Maia Instituto de Ciências do Mar, Universidade Federal do Ceará, Fortaleza.
  • José Maria Landim Dominguez Instituto de Geociências da Universidade Federal da Bahia, Salvador

DOI:

https://doi.org/10.32360/acmar.v39i1-2.6156

Keywords:

eolian dunes, migration, characteristics, Ceará State.

Abstract

This research work, which sought to comprise the coastal locations of Flexeiras, Baleia, Paracuru e Jericoacoara, Northwest Ceará State, aimed at assessing the migration process of dunes, taking into account their morphological features, dimensions and volume, in addition to gauging the influence of rainfall over their dynamics. The estimation of dune migration rates was based on direct, in situ, and indirect, by means of sattelite imaging, measurements of the distances between their dune tracks. The size and volume of dunes were obtained through topographical surveying and remote sensing. The comparison between such data and rainfall at the time of their formation showed there to occur a good inverse correlation between volume and main size features, and their respective migration speed, emphasizing the outstanding role of climate on the development and displacement of eolian dunes in Northwest Ceará State.  

Published

2017-02-06

Issue

Section

Artigos originais